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<<<All Things Wireless>>>Sat, 06 Aug 2022 14:48:52 +0000hourly1https://wordpress.org/?v=5.0.16Comment on Fundamentals of a Uniform Linear Array (ULA) by Yasir Ahmed (aka John)
https://www.raymaps.com/index.php/fundamentals-of-a-uniform-linear-array-ula/#comment-186386
Sat, 06 Aug 2022 14:48:52 +0000http://www.raymaps.com/?p=2884#comment-186386x and y is aribtrary. In general for a ULA you cannot estimate the angle in the plane perpendicular to ULA axis.
]]>Comment on 5G Millimeter Waves: Are They Really Harmful by Yasir Ahmed (aka John)
https://www.raymaps.com/index.php/5g-millimeter-waves-are-they-really-harmful/#comment-186385
Sat, 06 Aug 2022 14:45:16 +0000http://www.raymaps.com/?p=4041#comment-186385And we like to use microwave ovens in our homes/kitchens.
]]>Comment on Fundamentals of a Circular Array – Mathematical Model and Code by Yasir Ahmed (aka John)
https://www.raymaps.com/index.php/fundamentals-of-a-circular-array-mathematical-model-and-code/#comment-186384
Sat, 06 Aug 2022 14:42:10 +0000http://www.raymaps.com/?p=3050#comment-186384Can you not shift the origin by the distance, like in a 2D circle.
]]>Comment on Fundamentals of a Circular Array – Mathematical Model and Code by L G M PRAKASAM
https://www.raymaps.com/index.php/fundamentals-of-a-circular-array-mathematical-model-and-code/#comment-186316
Thu, 04 Aug 2022 03:43:49 +0000http://www.raymaps.com/?p=3050#comment-186316Mr John How to plot 2 polar plots on same graph with centres separated by distance in matlab
]]>Comment on Fundamentals of a Circular Array – Mathematical Model and Code by L G M PRAKASAM
https://www.raymaps.com/index.php/fundamentals-of-a-circular-array-mathematical-model-and-code/#comment-186315
Thu, 04 Aug 2022 03:33:57 +0000http://www.raymaps.com/?p=3050#comment-186315Sorry for my interruption. I think d_circular is the arc length between two elements. Then the equation satisfies.
]]>Comment on 5G Millimeter Waves: Are They Really Harmful by Melissa
https://www.raymaps.com/index.php/5g-millimeter-waves-are-they-really-harmful/#comment-186310
Wed, 03 Aug 2022 21:30:52 +0000http://www.raymaps.com/?p=4041#comment-186310Any kind of radiation is harmful to our bodies. And yet we are getting radiation put through us continuously! And we have no say in this matter. Our ozone wasn’t meant to be penitrated. Our government is killing us all. And they know it but don’t care.
]]>Comment on Fundamentals of a Uniform Linear Array (ULA) by Matlab 2015
https://www.raymaps.com/index.php/fundamentals-of-a-uniform-linear-array-ula/#comment-186143
Thu, 28 Jul 2022 05:56:49 +0000http://www.raymaps.com/?p=2884#comment-186143Thank you very much dear John for your response!
Dear John I know that we need 2D array for estimating both the angles. But I want to estimate only single angle with 1D array. So my question is:
1-with ULA only along x-axis, we can estimate elevation angle only
2- Now if we lift this array from x-axis and place it along y-axis, and no other array, then which angle can we estimate with this ULA: elevation or azimuth?
Regards,
]]>Comment on Fundamentals of a Uniform Linear Array (ULA) by Yasir Ahmed (aka John)
https://www.raymaps.com/index.php/fundamentals-of-a-uniform-linear-array-ula/#comment-186119
Wed, 27 Jul 2022 06:28:52 +0000http://www.raymaps.com/?p=2884#comment-186119I think you need 2D array to estimate both the azimuth and elevation.
]]>Comment on Fundamentals of a Uniform Linear Array (ULA) by Matlab 2015
https://www.raymaps.com/index.php/fundamentals-of-a-uniform-linear-array-ula/#comment-186104
Tue, 26 Jul 2022 18:09:36 +0000http://www.raymaps.com/?p=2884#comment-186104I have a confusion regarding this. Suppose my ULA is along x-axis only, then definitely we can estimate elevation angle with this. But if my ULA is placed along y-axis only, then how can we estimate elevation angle. I think in that case, we can estimate azimuth angle instead of elevation angle. Am I right? Please guide me in this regard.
]]>Comment on Fundamentals of a Uniform Linear Array (ULA) by Yasir Ahmed (aka John)
https://www.raymaps.com/index.php/fundamentals-of-a-uniform-linear-array-ula/#comment-186097
Tue, 26 Jul 2022 15:08:32 +0000http://www.raymaps.com/?p=2884#comment-186097I found this helpful “In recent years, much research has been done on the topic of localization by estimating the directions-of-arrival (DOA) (i.e., azimuth angles and elevation angles) and ranges of multiple targets in many applications, such as radar, sonar, and wireless communications. Many methods based on one-dimensional (1D) uniform linear array (ULA) have been proposed for estimating azimuth angle, or joint range and azimuth angle estimation, such as the well-known multiple signal classification (MUSIC) algorithm and estimation of signal parameters via rotational invariance techniques (ESPRIT) algorithm, and the generalized MUSIC and ESPRIT. Two-dimensional (2D) DOA estimation for azimuth and elevation angle has been further extended from the conventional 1D estimation methods based on some 2D arrays.” https://www.mdpi.com/1424-8220/18/5/1634/htm
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